Which sequence of if ... else statements is incorrect?

Analyze the following code:

let msg "Hello World";

console.log(msg);

What exception will be thrown as a result of its execution attempt?

Analyze the following code:

let point = {x: 10, y: 20};

for (let f in point) {

    console.log(point[f]);

}

What will appear on the console as a result of its execution?

Analyze the following code:

let id = "100";

{

    let id = 200;

    id = id + 1;

    console.log(id)

}

What will appear in the console as a result?

A recursive function is a function that: